Available for project work

Spatial questions, answered with evidence.

TB GeoSolutions is the independent GIS practice of Teun Broekhuizen. I turn open and client data into analysis, maps and web tools that planning and energy teams can act on.

Start a conversation → See the work

CURRENT ROLEJunior GIS Consultant, EnergieSamen

BASEHuizen, NL · 52.29°N 5.24°E

STUDYINGMSc GIMA

Work

Two projects — one for a client, one academic — with the tools used and what came out of it.

Client project · EnergieSamen · 2026

Web tool for tracking local climate targets

EnergieSamen needed to see how far local energy production had progressed against the climate targets set per region. The data existed, but not in a form anyone could interrogate at the level where decisions are actually made.

I built a browser-based tool on top of the supplied geospatial data, prepared in QGIS and delivered as an interactive HTML map. Users filter by province, municipality or RES region and read progress per area directly: realised production, pipeline, and remaining ambition. A second view maps the national turbine stock by age, so repowering candidates can be identified in seconds.

The tool covers all 30 RES regions and 3,159 wind turbines nationwide.

QGISHTML / JSLeaflet Geodata processingInteractive cartography

Ownership map of wind and solar production showing progress per RES region as pie charts over a map of the Netherlands — Ownership map — realised, pipeline and remaining ambition per RES region

Repowering map showing 3,159 Dutch wind turbines coloured by age class — Repowering map — 3,159 turbines classified by age

Academic project · GIMA · group work

Agent-based evacuation model, Helsinki city centre

A group project with fellow GIMA students: how quickly can the population of central Helsinki reach civil defence shelters, and where does that break down?

We built an agent-based model in GAMA, combining OpenStreetMap street and building data, Statistics Finland population grids and the municipal shelter register. Python and GeoPandas handled the preprocessing. Agents move through the real street network with walking speeds assigned by age cohort, across three times of day, so the model shows how shelter access shifts when people are at home, at work or in transit. The 3D rendering makes bottlenecks visible rather than tabular.

GAMA / GAMLPythonGeoPandas OpenStreetMapAgent-based modelling

3D model of central Helsinki with extruded buildings and coloured agents distributed across the street network — Helsinki city centre in 3D — agents distributed across the network at simulation start

Services

What I take on for clients.

Spatial analysis

Suitability, accessibility, hotspot and scenario comparison — with the assumptions written down so the results hold up in review.

Geodata engineering

ETL, data modelling, quality checks and automation. Pipelines that run again next quarter without you calling me.

Maps & web tools

Cartography and interactive maps built for the person who has to make the decision, not for the analyst who made the layer.

About

Who you would be working with.

I work as a Junior GIS Consultant at EnergieSamen and run TB GeoSolutions independently alongside my master's in Geographical Information Management and Applications.

My background in human geography keeps me close to the questions behind the data: space scarcity, the energy transition, accessibility. The GIS side is how I answer them — Python and PostGIS for the heavy lifting, QGIS and clear cartography for everything that has to be understood by people who don't open GIS software.

Most of my work sits in the Dutch open data ecosystem: BAG, BGT, AHN, CBS and PDOK, combined with whatever the client already has.

Teun Broekhuizen presenting in front of a historical map

At a glance

NowJunior GIS Consultant, EnergieSamen — since March 2026

AlsoIndependent consulting via TB GeoSolutions

StudyingMSc GIMA — UU, WUR, TU Delft, UT

LanguagesDutch (native), English (fluent)

Experience

Where I have worked, and on what.

Mar 2026 — now

Junior GIS Consultant

EnergieSamen

Spatial analysis supporting energy transition projects
Geodata processing, modelling and quality assurance
Interactive maps and reporting for cooperatives and project partners

2025 — now

Independent GIS consultant

TB GeoSolutions

Project-based spatial analysis and geodata engineering
Web mapping and reproducible Python pipelines

Sep 2024 — Feb 2025

Working student, spatial support

STEC Groep

Cleaned, structured and modelled tabular and geospatial data for reporting
Overlays, buffers and suitability checks in QGIS
Prepared site inspections and processed field observations

Sep 2024 — Jan 2025

Intern, spatial and logistics research

Keypoint Consultancy

Researched sustainable logistics options for mid-sized municipalities
Spatial analysis and mapping to support planning strategy
Presented findings to stakeholders

Toolkit

Software, code and education.

Analysis & desktop

QGISArcGIS ProFME GDALRSPSS

Code & data

PythonGeoPandaspandas PostGISSQLscikit-learn

Web & modelling

LeafletFoliumpydeck GAMANetLogo

2025 — 2027

MSc Geographical Information Management and Applications

Joint degree across Utrecht University, Wageningen University & Research, TU Delft and the University of Twente.

2022 — 2025

BSc Human Geography and Spatial Planning

Utrecht University.

Got a spatial problem?

Tell me the question and what data you already have. I'll tell you honestly whether GIS is the right tool for it.

info@tbgeosolutions.nl → LinkedIn